Soooooo...you think that there might be slavery? Try this on for size:

Amendment XIII

Section 1. Neither slavery nor involuntary servitude, except as a punishment for crime whereof the party shall have been duly convicted, shall exist within the United States, or any place subject to their jurisdiction.

Section 2. Congress shall have power to enforce this article by appropriate legislation.

The emphasis is mine (just to keep y'all worried). And in case you don't recognize it, that's the 13th Amendment to the Constitution of the United States.